package com.day05;

import java.math.BigDecimal;
import java.math.MathContext;

import static java.math.BigDecimal.ROUND_HALF_DOWN;

/**
 * @Author milian
 * @Date 2021/7/21 0021 19:17
 */
public class test1 {
    public static void main(String[] args) {
        double r = 13;
        r = Math.pow(r,2);
        BigDecimal rPow = new BigDecimal(r);
        


    }
}
